Electrical advance offers power without the wait

Electric cars seem to be an ideal option among next-generation automobiles: They are eco-friendly and accelerate fast with less noise, among other benefits.

The trouble is that every 300 kilometers you may have to wait hours to refill your batteries at a charging station.

Now, researchers from China and the United States have come up with a possible solution. On Friday, a research result published in the journal Science reported a method that promises to triple the energy capacity of supercapacitors, making them comparable - and perhaps superior - to some advanced batteries.